Panic ensued. An American Airlines flight from Los Angeles to London was ready for takeoff when a Wi-Fi network caused not only panic on board, but a 15-hour delay as well.

Flight 136 was forced to return to its gate after a Wi-Fi hotspot named after the notorious terrorist outfit Al-Qaeda was detected on a passenger’s smartphone. It read "Al-Quida Free Terror Nettwork."

While many believe it was probably a tasteless prank by one of the passengers onboard, Andrew Blankstein of NBC News reported that agents from Custom and Border Protection, the Department of Homeland Security and air marshals determined that the network did not originate from the flight.

The passengers were re-screened and authorities double-checked that none of them are on the "no fly" list.

The airport later released a statement, confirming there was “no crime was committed.”

"Thank goodness that we did not fly because you just don't know," a passenger Elliot del Pra told KABC. "It's very scary to think somebody would actually do that, especially on an international flight."

While the airline is “assessing the situation” and authorities have been notified, the Daily Dot reports such incidents have occurred before.

Just pulled up to Banff springs hotel. There's a wifi network here called "Secret Al-Qaeda Base".